VSS-LMS 알고리즘 기반 음향피드백 경로 모델링과 노이즈 파워 스케줄링을 이용한 멀티채널 능동 소음 제어 시스템

Abstract

In this paper, we propose a multi-channel active noise control (ANC) system with online acoustic feedback path modeling (OFPM) based on a variable step-size least-mean-square (VSS-LMS) algorithm and noise power scheduling. In particular, an acoustic feedback signal may degrade the performance of an ANC system and an additive random noise is applied to model the acoustic feedback path. However, the additive noise signal contributes as the residual noise to the system output. The proposed approach reduces such residual noise by confroling power of the additive random noise and modifying the error signal. Simulation results demonstrate the effectiveness of the proposed approach.